using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp3
{
    class Square : Shape
    {
        private int k;

        public int K{ get => k; set => k = value; }

        public override Shape GetArea()
        {
            double area = 0;
            area = 3.14 * K * K;
            
        }
    }
}
